Accordingly, I thought I had to reinstall the basic Intel WiDi from a saved source file and update it from the HP Update list instead of using the one from the Intel Web Site. Unfortunately, the result was a message that I had "already installed a more recent version" (apparently the update I had applied from the Intel web site). Under something like "Displays and Multimedia." I found the HP update for Intel WiDi, and tried to apply it. Went through HP Support Assistant, drilling down to my computer description and looking at the update list.
I tried rebooting - tried again, same result. After that box disappeared, nothing happened on the TV, and the connection message on the computer changed back to "disconnected." As a result, subsequent attempts to use the Intel-updated WiDi failed the computer to TV connection was detected, but on the TV screen, instead of getting a duplicate of my computer screen, I got a box in the lower right corner, stating something like "Miracast connecting". In order to try to solve the 3D problem, I updated the Intel WiDi with the latest version on the Intel Website, only to find out that I had missed a message stating that a different HP OEM version of WiDi was configured by HP for the maverick graphics processor on my dv6, requiring update by HP software. On my Pavilion dv6-7043cl, with Windows 7 (64-bit), I had been using the Intel WiDi successfully to view my computer screen on my 50 " LG 3D Smart TV, except for the display of 3D images processed into the correct 3D TV format by a well-tested program (Stereoscopic Player).